Graduate theses
Current Record: 3 of 1654
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| Title |
Βιοαποικοδόμηση απόβλητων τυροκομείου από το βακτήριο Pseudomonas sp. phDV1 |
| Alternative Title |
Biodegradation of dairy waste by the bacteria Pseudomonas sp. phDV1 |
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Author
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Παππά, Ευγενία
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Thesis advisor
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Τσιώτης, Γεώργιος
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| Abstract |
Plastics are today a critical problem for human society, as they are characterized as
particularly harmful to the natural environment in the long term and to date, no easy way to
achieve their management has been found. One way that appears to be more effective than
recycling and discarding is to gradually replace petroleum-based plastics with bioplastics,
which are much more environmentally friendly due to their ability not to be synthesized from
microorganisms, as well as due to their significant biodegradability. One such type of
biopolymers are polyhydroxyalkanoates (PHAs), which carry a range of desirable
characteristics that make them ideal alternatives for this role. Polyhydroxybutyric acid (PHB)
is the simplest and most widely studied PHA to date. The bacterium Pseudomonas sp. phDV1
is a Gram-negative bacterium known to be able to utilize waste that is toxic to both nature
and humans for its growth. Cheese whey is also an important polluting waste, which is rich in
organic components, but its disposal in nature is prohibited. At the same time, it is known that
the specific microorganism can produce PHB when under stress conditions. The PHBs in this
specific bacterium are produced intracellularly and are organized into granules, known as
carbosomes. These structures display on their surface proteins responsible for the structure
(phasins), regulation (regulatory factors, PhaR), production (synthases, PhaC) and
degradation (depolymerases, PhaZ) of PHBs. The present work focuses on the utilization of
cheese whey as a basic substrate for the growth of the wild type of Pseudomonas sp. phDV1
in different conditions each time, as well as detecting PHB in each different condition
studied. Furthermore, it is being studied whether the growth of this bacterium in the specific
waste, can reduce the total pollutant load of the cheese whey, making it safer for the
environment.
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| Language |
Greek |
| Subject |
Bioplastics |
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Bιοπλαστικά |
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Cheese whey |
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PHB |
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Tυρόγαλα |
| Issue date |
2024-07-19 |
| Collection
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School/Department--School of Sciences and Engineering--Department of Chemistry--Graduate theses
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Type of Work--Graduate theses
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| Permanent Link |
https://elocus.lib.uoc.gr//dlib/0/8/4/metadata-dlib-1720434835-17125-31960.tkl
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| Views |
2 |
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